H. Dattu is a highly respected figure in the Indian legal system, primarily known for his distinguished career as a judge. He served as the 42nd Chief Justice of India, holding this prestigious position from September 2014 to December 2015. Prior to his appointment as Chief Justice, he had a long and impactful tenure as a judge in the Supreme Court of India, starting in 2008. His career in the judiciary began much earlier, with his appointment as a Judge of the Karnataka High Court in 1995. He later became the Chief Justice of the Chhattisgarh High Court in 2007 before being elevated to the Supreme Court.

Throughout his career, Justice Dattu was involved in numerous landmark cases and delivered significant judgments across a wide range of legal areas, including constitutional law, criminal law, and administrative law. He was known for his commitment to upholding the rule of law and ensuring justice for all. His judgments often reflected a deep understanding of legal principles and a pragmatic approach to resolving complex legal issues. Beyond his judicial responsibilities, Justice Dattu also played a key role in various committees and initiatives aimed at improving the efficiency and effectiveness of the Indian judicial system. His contributions to the legal profession have been widely recognized and appreciated, solidifying his legacy as a prominent and influential figure in the Indian legal landscape. After his retirement as Chief Justice, he was appointed as the Chairperson of the National Human Rights Commission (NHRC).